Cleaning brush



FIG. 1 is a perspective view as seen from the bottom and one side of acleaning brush showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a top plan view thereof; and,

FIG. 4 is an elevational view of the side opposite that shown in FIG. 1.

The ornamental design for a cleaning brush, as shown.